19 April 2014
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Optimization of laser surface melt-hardening on gray and nodular iron

Author(s): Janez Grum, Roman Sturm & Pavle Zerovnik

Abstract:
Laser surface melt-hardening has recently been successfully introduced into industry to improve the wear resistance of different parts made from gray and nodular irons.

A characteristics of this procedure is rapid heating of a thin surface layer of the workpiece material above the melting point temperature. After the completion of heat treatment, a structure-modified surface layer is obtained consisting of the remelted and hardened layer.

Experimental results of the study of laser surface melt-hardening process have confirmed that the procedure is suitable also for low-power CQ^ laser sources to increase the depth of the modified layer.

Because of remarkable repeatability of the characteristics of the modified layer, it is possible ...

Pages: 10
Size: 921 kb
Paper DOI: 10.2495/SURF970251

 

 

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Surface Treatment III

Surface Treatment III

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